Figure E1.

Trends in hospitalizations for lung cancer for Japanese acute-care hospitals, 2017 through 2020. We illustrated the trends in the weekly number of hospitalizations with a primary diagnosis of lung cancer (International Classification of Diseases 10: C34) across the 272 analytic acute-care hospitals. The sharp drops in calendar week 18 of 2017 to 2019 and calendar week 19 of 2020 were due to consecutive public holidays called the “Golden Week.”